1472 lines
36 KiB
C
1472 lines
36 KiB
C
/*
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* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
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* Copyright (c) 2004 Intel Corporation. All rights reserved.
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* Copyright (c) 2004 Topspin Corporation. All rights reserved.
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* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/export.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_cache.h>
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#include <rdma/ib_addr.h>
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#include "core_priv.h"
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static const char * const ib_events[] = {
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[IB_EVENT_CQ_ERR] = "CQ error",
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[IB_EVENT_QP_FATAL] = "QP fatal error",
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[IB_EVENT_QP_REQ_ERR] = "QP request error",
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[IB_EVENT_QP_ACCESS_ERR] = "QP access error",
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[IB_EVENT_COMM_EST] = "communication established",
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[IB_EVENT_SQ_DRAINED] = "send queue drained",
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[IB_EVENT_PATH_MIG] = "path migration successful",
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[IB_EVENT_PATH_MIG_ERR] = "path migration error",
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[IB_EVENT_DEVICE_FATAL] = "device fatal error",
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[IB_EVENT_PORT_ACTIVE] = "port active",
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[IB_EVENT_PORT_ERR] = "port error",
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[IB_EVENT_LID_CHANGE] = "LID change",
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[IB_EVENT_PKEY_CHANGE] = "P_key change",
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[IB_EVENT_SM_CHANGE] = "SM change",
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[IB_EVENT_SRQ_ERR] = "SRQ error",
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[IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached",
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[IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached",
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[IB_EVENT_CLIENT_REREGISTER] = "client reregister",
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[IB_EVENT_GID_CHANGE] = "GID changed",
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};
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const char *ib_event_msg(enum ib_event_type event)
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{
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size_t index = event;
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return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ?
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ib_events[index] : "unrecognized event";
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}
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EXPORT_SYMBOL(ib_event_msg);
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static const char * const wc_statuses[] = {
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[IB_WC_SUCCESS] = "success",
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[IB_WC_LOC_LEN_ERR] = "local length error",
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[IB_WC_LOC_QP_OP_ERR] = "local QP operation error",
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[IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error",
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[IB_WC_LOC_PROT_ERR] = "local protection error",
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[IB_WC_WR_FLUSH_ERR] = "WR flushed",
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[IB_WC_MW_BIND_ERR] = "memory management operation error",
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[IB_WC_BAD_RESP_ERR] = "bad response error",
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[IB_WC_LOC_ACCESS_ERR] = "local access error",
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[IB_WC_REM_INV_REQ_ERR] = "invalid request error",
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[IB_WC_REM_ACCESS_ERR] = "remote access error",
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[IB_WC_REM_OP_ERR] = "remote operation error",
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[IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded",
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[IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded",
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[IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error",
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[IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request",
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[IB_WC_REM_ABORT_ERR] = "operation aborted",
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[IB_WC_INV_EECN_ERR] = "invalid EE context number",
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[IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state",
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[IB_WC_FATAL_ERR] = "fatal error",
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[IB_WC_RESP_TIMEOUT_ERR] = "response timeout error",
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[IB_WC_GENERAL_ERR] = "general error",
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};
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const char *ib_wc_status_msg(enum ib_wc_status status)
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{
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size_t index = status;
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return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ?
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wc_statuses[index] : "unrecognized status";
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}
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EXPORT_SYMBOL(ib_wc_status_msg);
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__attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
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{
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switch (rate) {
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case IB_RATE_2_5_GBPS: return 1;
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case IB_RATE_5_GBPS: return 2;
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case IB_RATE_10_GBPS: return 4;
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case IB_RATE_20_GBPS: return 8;
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case IB_RATE_30_GBPS: return 12;
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case IB_RATE_40_GBPS: return 16;
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case IB_RATE_60_GBPS: return 24;
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case IB_RATE_80_GBPS: return 32;
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case IB_RATE_120_GBPS: return 48;
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default: return -1;
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}
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}
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EXPORT_SYMBOL(ib_rate_to_mult);
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__attribute_const__ enum ib_rate mult_to_ib_rate(int mult)
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{
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switch (mult) {
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case 1: return IB_RATE_2_5_GBPS;
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case 2: return IB_RATE_5_GBPS;
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case 4: return IB_RATE_10_GBPS;
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case 8: return IB_RATE_20_GBPS;
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case 12: return IB_RATE_30_GBPS;
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case 16: return IB_RATE_40_GBPS;
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case 24: return IB_RATE_60_GBPS;
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case 32: return IB_RATE_80_GBPS;
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case 48: return IB_RATE_120_GBPS;
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default: return IB_RATE_PORT_CURRENT;
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}
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}
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EXPORT_SYMBOL(mult_to_ib_rate);
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__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
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{
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switch (rate) {
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case IB_RATE_2_5_GBPS: return 2500;
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case IB_RATE_5_GBPS: return 5000;
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case IB_RATE_10_GBPS: return 10000;
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case IB_RATE_20_GBPS: return 20000;
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case IB_RATE_30_GBPS: return 30000;
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case IB_RATE_40_GBPS: return 40000;
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case IB_RATE_60_GBPS: return 60000;
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case IB_RATE_80_GBPS: return 80000;
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case IB_RATE_120_GBPS: return 120000;
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case IB_RATE_14_GBPS: return 14062;
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case IB_RATE_56_GBPS: return 56250;
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case IB_RATE_112_GBPS: return 112500;
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case IB_RATE_168_GBPS: return 168750;
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case IB_RATE_25_GBPS: return 25781;
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case IB_RATE_100_GBPS: return 103125;
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case IB_RATE_200_GBPS: return 206250;
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case IB_RATE_300_GBPS: return 309375;
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default: return -1;
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}
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}
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EXPORT_SYMBOL(ib_rate_to_mbps);
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__attribute_const__ enum rdma_transport_type
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rdma_node_get_transport(enum rdma_node_type node_type)
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{
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switch (node_type) {
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case RDMA_NODE_IB_CA:
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case RDMA_NODE_IB_SWITCH:
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case RDMA_NODE_IB_ROUTER:
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return RDMA_TRANSPORT_IB;
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case RDMA_NODE_RNIC:
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return RDMA_TRANSPORT_IWARP;
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case RDMA_NODE_USNIC:
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return RDMA_TRANSPORT_USNIC;
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case RDMA_NODE_USNIC_UDP:
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return RDMA_TRANSPORT_USNIC_UDP;
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default:
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BUG();
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return 0;
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}
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}
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EXPORT_SYMBOL(rdma_node_get_transport);
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enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
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{
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if (device->get_link_layer)
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return device->get_link_layer(device, port_num);
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switch (rdma_node_get_transport(device->node_type)) {
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case RDMA_TRANSPORT_IB:
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return IB_LINK_LAYER_INFINIBAND;
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case RDMA_TRANSPORT_IWARP:
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case RDMA_TRANSPORT_USNIC:
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case RDMA_TRANSPORT_USNIC_UDP:
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return IB_LINK_LAYER_ETHERNET;
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default:
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return IB_LINK_LAYER_UNSPECIFIED;
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}
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}
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EXPORT_SYMBOL(rdma_port_get_link_layer);
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/* Protection domains */
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/**
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* ib_alloc_pd - Allocates an unused protection domain.
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* @device: The device on which to allocate the protection domain.
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*
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* A protection domain object provides an association between QPs, shared
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* receive queues, address handles, memory regions, and memory windows.
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*
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* Every PD has a local_dma_lkey which can be used as the lkey value for local
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* memory operations.
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*/
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struct ib_pd *ib_alloc_pd(struct ib_device *device)
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{
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struct ib_pd *pd;
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struct ib_device_attr devattr;
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int rc;
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rc = ib_query_device(device, &devattr);
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if (rc)
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return ERR_PTR(rc);
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pd = device->alloc_pd(device, NULL, NULL);
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if (IS_ERR(pd))
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return pd;
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pd->device = device;
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pd->uobject = NULL;
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pd->local_mr = NULL;
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atomic_set(&pd->usecnt, 0);
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if (devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)
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pd->local_dma_lkey = device->local_dma_lkey;
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else {
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struct ib_mr *mr;
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mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
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if (IS_ERR(mr)) {
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ib_dealloc_pd(pd);
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return (struct ib_pd *)mr;
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}
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pd->local_mr = mr;
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pd->local_dma_lkey = pd->local_mr->lkey;
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}
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return pd;
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}
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EXPORT_SYMBOL(ib_alloc_pd);
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/**
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* ib_dealloc_pd - Deallocates a protection domain.
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* @pd: The protection domain to deallocate.
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*
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* It is an error to call this function while any resources in the pd still
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* exist. The caller is responsible to synchronously destroy them and
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* guarantee no new allocations will happen.
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*/
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void ib_dealloc_pd(struct ib_pd *pd)
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{
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int ret;
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if (pd->local_mr) {
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ret = ib_dereg_mr(pd->local_mr);
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WARN_ON(ret);
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pd->local_mr = NULL;
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}
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/* uverbs manipulates usecnt with proper locking, while the kabi
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requires the caller to guarantee we can't race here. */
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WARN_ON(atomic_read(&pd->usecnt));
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/* Making delalloc_pd a void return is a WIP, no driver should return
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an error here. */
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ret = pd->device->dealloc_pd(pd);
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WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd");
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}
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EXPORT_SYMBOL(ib_dealloc_pd);
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/* Address handles */
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struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
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{
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struct ib_ah *ah;
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ah = pd->device->create_ah(pd, ah_attr);
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if (!IS_ERR(ah)) {
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ah->device = pd->device;
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ah->pd = pd;
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ah->uobject = NULL;
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atomic_inc(&pd->usecnt);
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}
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return ah;
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}
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EXPORT_SYMBOL(ib_create_ah);
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int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
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const struct ib_wc *wc, const struct ib_grh *grh,
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struct ib_ah_attr *ah_attr)
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{
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u32 flow_class;
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u16 gid_index;
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int ret;
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memset(ah_attr, 0, sizeof *ah_attr);
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if (rdma_cap_eth_ah(device, port_num)) {
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if (!(wc->wc_flags & IB_WC_GRH))
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return -EPROTOTYPE;
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if (wc->wc_flags & IB_WC_WITH_SMAC &&
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wc->wc_flags & IB_WC_WITH_VLAN) {
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memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
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ah_attr->vlan_id = wc->vlan_id;
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} else {
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ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
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ah_attr->dmac, &ah_attr->vlan_id);
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if (ret)
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return ret;
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}
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} else {
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ah_attr->vlan_id = 0xffff;
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}
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ah_attr->dlid = wc->slid;
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ah_attr->sl = wc->sl;
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ah_attr->src_path_bits = wc->dlid_path_bits;
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ah_attr->port_num = port_num;
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if (wc->wc_flags & IB_WC_GRH) {
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ah_attr->ah_flags = IB_AH_GRH;
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ah_attr->grh.dgid = grh->sgid;
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ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
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&gid_index);
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if (ret)
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return ret;
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ah_attr->grh.sgid_index = (u8) gid_index;
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flow_class = be32_to_cpu(grh->version_tclass_flow);
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ah_attr->grh.flow_label = flow_class & 0xFFFFF;
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ah_attr->grh.hop_limit = 0xFF;
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ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
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}
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return 0;
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}
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EXPORT_SYMBOL(ib_init_ah_from_wc);
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struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
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const struct ib_grh *grh, u8 port_num)
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{
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struct ib_ah_attr ah_attr;
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int ret;
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ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
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if (ret)
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return ERR_PTR(ret);
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return ib_create_ah(pd, &ah_attr);
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}
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EXPORT_SYMBOL(ib_create_ah_from_wc);
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int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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return ah->device->modify_ah ?
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ah->device->modify_ah(ah, ah_attr) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_modify_ah);
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int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
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{
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return ah->device->query_ah ?
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ah->device->query_ah(ah, ah_attr) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_ah);
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int ib_destroy_ah(struct ib_ah *ah)
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{
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struct ib_pd *pd;
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int ret;
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pd = ah->pd;
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ret = ah->device->destroy_ah(ah);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_destroy_ah);
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/* Shared receive queues */
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struct ib_srq *ib_create_srq(struct ib_pd *pd,
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struct ib_srq_init_attr *srq_init_attr)
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{
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struct ib_srq *srq;
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if (!pd->device->create_srq)
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return ERR_PTR(-ENOSYS);
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srq = pd->device->create_srq(pd, srq_init_attr, NULL);
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if (!IS_ERR(srq)) {
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srq->device = pd->device;
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srq->pd = pd;
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srq->uobject = NULL;
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srq->event_handler = srq_init_attr->event_handler;
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srq->srq_context = srq_init_attr->srq_context;
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srq->srq_type = srq_init_attr->srq_type;
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if (srq->srq_type == IB_SRQT_XRC) {
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srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
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srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
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atomic_inc(&srq->ext.xrc.xrcd->usecnt);
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atomic_inc(&srq->ext.xrc.cq->usecnt);
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}
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atomic_inc(&pd->usecnt);
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atomic_set(&srq->usecnt, 0);
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}
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return srq;
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}
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EXPORT_SYMBOL(ib_create_srq);
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int ib_modify_srq(struct ib_srq *srq,
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struct ib_srq_attr *srq_attr,
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enum ib_srq_attr_mask srq_attr_mask)
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{
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return srq->device->modify_srq ?
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srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
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-ENOSYS;
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}
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EXPORT_SYMBOL(ib_modify_srq);
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int ib_query_srq(struct ib_srq *srq,
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struct ib_srq_attr *srq_attr)
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{
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return srq->device->query_srq ?
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srq->device->query_srq(srq, srq_attr) : -ENOSYS;
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}
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EXPORT_SYMBOL(ib_query_srq);
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int ib_destroy_srq(struct ib_srq *srq)
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{
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struct ib_pd *pd;
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enum ib_srq_type srq_type;
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struct ib_xrcd *uninitialized_var(xrcd);
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struct ib_cq *uninitialized_var(cq);
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int ret;
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if (atomic_read(&srq->usecnt))
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return -EBUSY;
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pd = srq->pd;
|
|
srq_type = srq->srq_type;
|
|
if (srq_type == IB_SRQT_XRC) {
|
|
xrcd = srq->ext.xrc.xrcd;
|
|
cq = srq->ext.xrc.cq;
|
|
}
|
|
|
|
ret = srq->device->destroy_srq(srq);
|
|
if (!ret) {
|
|
atomic_dec(&pd->usecnt);
|
|
if (srq_type == IB_SRQT_XRC) {
|
|
atomic_dec(&xrcd->usecnt);
|
|
atomic_dec(&cq->usecnt);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_srq);
|
|
|
|
/* Queue pairs */
|
|
|
|
static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
|
|
{
|
|
struct ib_qp *qp = context;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&qp->device->event_handler_lock, flags);
|
|
list_for_each_entry(event->element.qp, &qp->open_list, open_list)
|
|
if (event->element.qp->event_handler)
|
|
event->element.qp->event_handler(event, event->element.qp->qp_context);
|
|
spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
|
|
}
|
|
|
|
static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
|
|
{
|
|
mutex_lock(&xrcd->tgt_qp_mutex);
|
|
list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
|
|
mutex_unlock(&xrcd->tgt_qp_mutex);
|
|
}
|
|
|
|
static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
|
|
void (*event_handler)(struct ib_event *, void *),
|
|
void *qp_context)
|
|
{
|
|
struct ib_qp *qp;
|
|
unsigned long flags;
|
|
|
|
qp = kzalloc(sizeof *qp, GFP_KERNEL);
|
|
if (!qp)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
qp->real_qp = real_qp;
|
|
atomic_inc(&real_qp->usecnt);
|
|
qp->device = real_qp->device;
|
|
qp->event_handler = event_handler;
|
|
qp->qp_context = qp_context;
|
|
qp->qp_num = real_qp->qp_num;
|
|
qp->qp_type = real_qp->qp_type;
|
|
|
|
spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
|
|
list_add(&qp->open_list, &real_qp->open_list);
|
|
spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
|
|
|
|
return qp;
|
|
}
|
|
|
|
struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
|
|
struct ib_qp_open_attr *qp_open_attr)
|
|
{
|
|
struct ib_qp *qp, *real_qp;
|
|
|
|
if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
qp = ERR_PTR(-EINVAL);
|
|
mutex_lock(&xrcd->tgt_qp_mutex);
|
|
list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
|
|
if (real_qp->qp_num == qp_open_attr->qp_num) {
|
|
qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
|
|
qp_open_attr->qp_context);
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&xrcd->tgt_qp_mutex);
|
|
return qp;
|
|
}
|
|
EXPORT_SYMBOL(ib_open_qp);
|
|
|
|
struct ib_qp *ib_create_qp(struct ib_pd *pd,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
struct ib_qp *qp, *real_qp;
|
|
struct ib_device *device;
|
|
|
|
device = pd ? pd->device : qp_init_attr->xrcd->device;
|
|
qp = device->create_qp(pd, qp_init_attr, NULL);
|
|
|
|
if (!IS_ERR(qp)) {
|
|
qp->device = device;
|
|
qp->real_qp = qp;
|
|
qp->uobject = NULL;
|
|
qp->qp_type = qp_init_attr->qp_type;
|
|
|
|
atomic_set(&qp->usecnt, 0);
|
|
if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
|
|
qp->event_handler = __ib_shared_qp_event_handler;
|
|
qp->qp_context = qp;
|
|
qp->pd = NULL;
|
|
qp->send_cq = qp->recv_cq = NULL;
|
|
qp->srq = NULL;
|
|
qp->xrcd = qp_init_attr->xrcd;
|
|
atomic_inc(&qp_init_attr->xrcd->usecnt);
|
|
INIT_LIST_HEAD(&qp->open_list);
|
|
|
|
real_qp = qp;
|
|
qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
|
|
qp_init_attr->qp_context);
|
|
if (!IS_ERR(qp))
|
|
__ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
|
|
else
|
|
real_qp->device->destroy_qp(real_qp);
|
|
} else {
|
|
qp->event_handler = qp_init_attr->event_handler;
|
|
qp->qp_context = qp_init_attr->qp_context;
|
|
if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
|
|
qp->recv_cq = NULL;
|
|
qp->srq = NULL;
|
|
} else {
|
|
qp->recv_cq = qp_init_attr->recv_cq;
|
|
atomic_inc(&qp_init_attr->recv_cq->usecnt);
|
|
qp->srq = qp_init_attr->srq;
|
|
if (qp->srq)
|
|
atomic_inc(&qp_init_attr->srq->usecnt);
|
|
}
|
|
|
|
qp->pd = pd;
|
|
qp->send_cq = qp_init_attr->send_cq;
|
|
qp->xrcd = NULL;
|
|
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_inc(&qp_init_attr->send_cq->usecnt);
|
|
}
|
|
}
|
|
|
|
return qp;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_qp);
|
|
|
|
static const struct {
|
|
int valid;
|
|
enum ib_qp_attr_mask req_param[IB_QPT_MAX];
|
|
enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX];
|
|
enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
|
|
enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX];
|
|
} qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
|
|
[IB_QPS_RESET] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_INIT] = {
|
|
.valid = 1,
|
|
.req_param = {
|
|
[IB_QPT_UD] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_RAW_PACKET] = IB_QP_PORT,
|
|
[IB_QPT_UC] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_RC] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
}
|
|
},
|
|
},
|
|
[IB_QPS_INIT] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 },
|
|
[IB_QPS_INIT] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_RC] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_PORT |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
}
|
|
},
|
|
[IB_QPS_RTR] = {
|
|
.valid = 1,
|
|
.req_param = {
|
|
[IB_QPT_UC] = (IB_QP_AV |
|
|
IB_QP_PATH_MTU |
|
|
IB_QP_DEST_QPN |
|
|
IB_QP_RQ_PSN),
|
|
[IB_QPT_RC] = (IB_QP_AV |
|
|
IB_QP_PATH_MTU |
|
|
IB_QP_DEST_QPN |
|
|
IB_QP_RQ_PSN |
|
|
IB_QP_MAX_DEST_RD_ATOMIC |
|
|
IB_QP_MIN_RNR_TIMER),
|
|
[IB_QPT_XRC_INI] = (IB_QP_AV |
|
|
IB_QP_PATH_MTU |
|
|
IB_QP_DEST_QPN |
|
|
IB_QP_RQ_PSN),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_AV |
|
|
IB_QP_PATH_MTU |
|
|
IB_QP_DEST_QPN |
|
|
IB_QP_RQ_PSN |
|
|
IB_QP_MAX_DEST_RD_ATOMIC |
|
|
IB_QP_MIN_RNR_TIMER),
|
|
},
|
|
.req_param_add_eth = {
|
|
[IB_QPT_RC] = (IB_QP_SMAC),
|
|
[IB_QPT_UC] = (IB_QP_SMAC),
|
|
[IB_QPT_XRC_INI] = (IB_QP_SMAC),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_SMAC)
|
|
},
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX),
|
|
[IB_QPT_RC] = (IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX),
|
|
[IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX),
|
|
[IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
},
|
|
.opt_param_add_eth = {
|
|
[IB_QPT_RC] = (IB_QP_ALT_SMAC |
|
|
IB_QP_VID |
|
|
IB_QP_ALT_VID),
|
|
[IB_QPT_UC] = (IB_QP_ALT_SMAC |
|
|
IB_QP_VID |
|
|
IB_QP_ALT_VID),
|
|
[IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC |
|
|
IB_QP_VID |
|
|
IB_QP_ALT_VID),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC |
|
|
IB_QP_VID |
|
|
IB_QP_ALT_VID)
|
|
}
|
|
}
|
|
},
|
|
[IB_QPS_RTR] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 },
|
|
[IB_QPS_RTS] = {
|
|
.valid = 1,
|
|
.req_param = {
|
|
[IB_QPT_UD] = IB_QP_SQ_PSN,
|
|
[IB_QPT_UC] = IB_QP_SQ_PSN,
|
|
[IB_QPT_RC] = (IB_QP_TIMEOUT |
|
|
IB_QP_RETRY_CNT |
|
|
IB_QP_RNR_RETRY |
|
|
IB_QP_SQ_PSN |
|
|
IB_QP_MAX_QP_RD_ATOMIC),
|
|
[IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
|
|
IB_QP_RETRY_CNT |
|
|
IB_QP_RNR_RETRY |
|
|
IB_QP_SQ_PSN |
|
|
IB_QP_MAX_QP_RD_ATOMIC),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
|
|
IB_QP_SQ_PSN),
|
|
[IB_QPT_SMI] = IB_QP_SQ_PSN,
|
|
[IB_QPT_GSI] = IB_QP_SQ_PSN,
|
|
},
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_RC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_SMI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
}
|
|
}
|
|
},
|
|
[IB_QPS_RTS] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 },
|
|
[IB_QPS_RTS] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_RC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_PATH_MIG_STATE |
|
|
IB_QP_MIN_RNR_TIMER),
|
|
[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_PATH_MIG_STATE |
|
|
IB_QP_MIN_RNR_TIMER),
|
|
[IB_QPT_SMI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
}
|
|
},
|
|
[IB_QPS_SQD] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
|
|
[IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
|
|
[IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
|
|
[IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
|
|
[IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
|
|
[IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
|
|
[IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
|
|
}
|
|
},
|
|
},
|
|
[IB_QPS_SQD] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 },
|
|
[IB_QPS_RTS] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_RC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_SMI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
}
|
|
},
|
|
[IB_QPS_SQD] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_AV |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_RC] = (IB_QP_PORT |
|
|
IB_QP_AV |
|
|
IB_QP_TIMEOUT |
|
|
IB_QP_RETRY_CNT |
|
|
IB_QP_RNR_RETRY |
|
|
IB_QP_MAX_QP_RD_ATOMIC |
|
|
IB_QP_MAX_DEST_RD_ATOMIC |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_INI] = (IB_QP_PORT |
|
|
IB_QP_AV |
|
|
IB_QP_TIMEOUT |
|
|
IB_QP_RETRY_CNT |
|
|
IB_QP_RNR_RETRY |
|
|
IB_QP_MAX_QP_RD_ATOMIC |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_XRC_TGT] = (IB_QP_PORT |
|
|
IB_QP_AV |
|
|
IB_QP_TIMEOUT |
|
|
IB_QP_MAX_DEST_RD_ATOMIC |
|
|
IB_QP_ALT_PATH |
|
|
IB_QP_ACCESS_FLAGS |
|
|
IB_QP_PKEY_INDEX |
|
|
IB_QP_MIN_RNR_TIMER |
|
|
IB_QP_PATH_MIG_STATE),
|
|
[IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
|
|
IB_QP_QKEY),
|
|
}
|
|
}
|
|
},
|
|
[IB_QPS_SQE] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 },
|
|
[IB_QPS_RTS] = {
|
|
.valid = 1,
|
|
.opt_param = {
|
|
[IB_QPT_UD] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_UC] = (IB_QP_CUR_STATE |
|
|
IB_QP_ACCESS_FLAGS),
|
|
[IB_QPT_SMI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
[IB_QPT_GSI] = (IB_QP_CUR_STATE |
|
|
IB_QP_QKEY),
|
|
}
|
|
}
|
|
},
|
|
[IB_QPS_ERR] = {
|
|
[IB_QPS_RESET] = { .valid = 1 },
|
|
[IB_QPS_ERR] = { .valid = 1 }
|
|
}
|
|
};
|
|
|
|
int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
|
|
enum ib_qp_type type, enum ib_qp_attr_mask mask,
|
|
enum rdma_link_layer ll)
|
|
{
|
|
enum ib_qp_attr_mask req_param, opt_param;
|
|
|
|
if (cur_state < 0 || cur_state > IB_QPS_ERR ||
|
|
next_state < 0 || next_state > IB_QPS_ERR)
|
|
return 0;
|
|
|
|
if (mask & IB_QP_CUR_STATE &&
|
|
cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
|
|
cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
|
|
return 0;
|
|
|
|
if (!qp_state_table[cur_state][next_state].valid)
|
|
return 0;
|
|
|
|
req_param = qp_state_table[cur_state][next_state].req_param[type];
|
|
opt_param = qp_state_table[cur_state][next_state].opt_param[type];
|
|
|
|
if (ll == IB_LINK_LAYER_ETHERNET) {
|
|
req_param |= qp_state_table[cur_state][next_state].
|
|
req_param_add_eth[type];
|
|
opt_param |= qp_state_table[cur_state][next_state].
|
|
opt_param_add_eth[type];
|
|
}
|
|
|
|
if ((mask & req_param) != req_param)
|
|
return 0;
|
|
|
|
if (mask & ~(req_param | opt_param | IB_QP_STATE))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
EXPORT_SYMBOL(ib_modify_qp_is_ok);
|
|
|
|
int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr, int *qp_attr_mask)
|
|
{
|
|
int ret = 0;
|
|
union ib_gid sgid;
|
|
|
|
if ((*qp_attr_mask & IB_QP_AV) &&
|
|
(rdma_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) {
|
|
ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
|
|
qp_attr->ah_attr.grh.sgid_index, &sgid);
|
|
if (ret)
|
|
goto out;
|
|
if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
|
|
rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
|
|
rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
|
|
if (!(*qp_attr_mask & IB_QP_VID))
|
|
qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
|
|
} else {
|
|
ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
|
|
qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
|
|
if (ret)
|
|
goto out;
|
|
ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
*qp_attr_mask |= IB_QP_SMAC;
|
|
if (qp_attr->vlan_id < 0xFFFF)
|
|
*qp_attr_mask |= IB_QP_VID;
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
|
|
|
|
|
|
int ib_modify_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask)
|
|
{
|
|
int ret;
|
|
|
|
ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
|
|
}
|
|
EXPORT_SYMBOL(ib_modify_qp);
|
|
|
|
int ib_query_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr)
|
|
{
|
|
return qp->device->query_qp ?
|
|
qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
|
|
-ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_query_qp);
|
|
|
|
int ib_close_qp(struct ib_qp *qp)
|
|
{
|
|
struct ib_qp *real_qp;
|
|
unsigned long flags;
|
|
|
|
real_qp = qp->real_qp;
|
|
if (real_qp == qp)
|
|
return -EINVAL;
|
|
|
|
spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
|
|
list_del(&qp->open_list);
|
|
spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
|
|
|
|
atomic_dec(&real_qp->usecnt);
|
|
kfree(qp);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ib_close_qp);
|
|
|
|
static int __ib_destroy_shared_qp(struct ib_qp *qp)
|
|
{
|
|
struct ib_xrcd *xrcd;
|
|
struct ib_qp *real_qp;
|
|
int ret;
|
|
|
|
real_qp = qp->real_qp;
|
|
xrcd = real_qp->xrcd;
|
|
|
|
mutex_lock(&xrcd->tgt_qp_mutex);
|
|
ib_close_qp(qp);
|
|
if (atomic_read(&real_qp->usecnt) == 0)
|
|
list_del(&real_qp->xrcd_list);
|
|
else
|
|
real_qp = NULL;
|
|
mutex_unlock(&xrcd->tgt_qp_mutex);
|
|
|
|
if (real_qp) {
|
|
ret = ib_destroy_qp(real_qp);
|
|
if (!ret)
|
|
atomic_dec(&xrcd->usecnt);
|
|
else
|
|
__ib_insert_xrcd_qp(xrcd, real_qp);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ib_destroy_qp(struct ib_qp *qp)
|
|
{
|
|
struct ib_pd *pd;
|
|
struct ib_cq *scq, *rcq;
|
|
struct ib_srq *srq;
|
|
int ret;
|
|
|
|
if (atomic_read(&qp->usecnt))
|
|
return -EBUSY;
|
|
|
|
if (qp->real_qp != qp)
|
|
return __ib_destroy_shared_qp(qp);
|
|
|
|
pd = qp->pd;
|
|
scq = qp->send_cq;
|
|
rcq = qp->recv_cq;
|
|
srq = qp->srq;
|
|
|
|
ret = qp->device->destroy_qp(qp);
|
|
if (!ret) {
|
|
if (pd)
|
|
atomic_dec(&pd->usecnt);
|
|
if (scq)
|
|
atomic_dec(&scq->usecnt);
|
|
if (rcq)
|
|
atomic_dec(&rcq->usecnt);
|
|
if (srq)
|
|
atomic_dec(&srq->usecnt);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_qp);
|
|
|
|
/* Completion queues */
|
|
|
|
struct ib_cq *ib_create_cq(struct ib_device *device,
|
|
ib_comp_handler comp_handler,
|
|
void (*event_handler)(struct ib_event *, void *),
|
|
void *cq_context,
|
|
const struct ib_cq_init_attr *cq_attr)
|
|
{
|
|
struct ib_cq *cq;
|
|
|
|
cq = device->create_cq(device, cq_attr, NULL, NULL);
|
|
|
|
if (!IS_ERR(cq)) {
|
|
cq->device = device;
|
|
cq->uobject = NULL;
|
|
cq->comp_handler = comp_handler;
|
|
cq->event_handler = event_handler;
|
|
cq->cq_context = cq_context;
|
|
atomic_set(&cq->usecnt, 0);
|
|
}
|
|
|
|
return cq;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_cq);
|
|
|
|
int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
|
|
{
|
|
return cq->device->modify_cq ?
|
|
cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_modify_cq);
|
|
|
|
int ib_destroy_cq(struct ib_cq *cq)
|
|
{
|
|
if (atomic_read(&cq->usecnt))
|
|
return -EBUSY;
|
|
|
|
return cq->device->destroy_cq(cq);
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_cq);
|
|
|
|
int ib_resize_cq(struct ib_cq *cq, int cqe)
|
|
{
|
|
return cq->device->resize_cq ?
|
|
cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_resize_cq);
|
|
|
|
/* Memory regions */
|
|
|
|
struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
|
|
{
|
|
struct ib_mr *mr;
|
|
int err;
|
|
|
|
err = ib_check_mr_access(mr_access_flags);
|
|
if (err)
|
|
return ERR_PTR(err);
|
|
|
|
mr = pd->device->get_dma_mr(pd, mr_access_flags);
|
|
|
|
if (!IS_ERR(mr)) {
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&mr->usecnt, 0);
|
|
}
|
|
|
|
return mr;
|
|
}
|
|
EXPORT_SYMBOL(ib_get_dma_mr);
|
|
|
|
int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
|
|
{
|
|
return mr->device->query_mr ?
|
|
mr->device->query_mr(mr, mr_attr) : -ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_query_mr);
|
|
|
|
int ib_dereg_mr(struct ib_mr *mr)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
if (atomic_read(&mr->usecnt))
|
|
return -EBUSY;
|
|
|
|
pd = mr->pd;
|
|
ret = mr->device->dereg_mr(mr);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dereg_mr);
|
|
|
|
/**
|
|
* ib_alloc_mr() - Allocates a memory region
|
|
* @pd: protection domain associated with the region
|
|
* @mr_type: memory region type
|
|
* @max_num_sg: maximum sg entries available for registration.
|
|
*
|
|
* Notes:
|
|
* Memory registeration page/sg lists must not exceed max_num_sg.
|
|
* For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed
|
|
* max_num_sg * used_page_size.
|
|
*
|
|
*/
|
|
struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
|
|
enum ib_mr_type mr_type,
|
|
u32 max_num_sg)
|
|
{
|
|
struct ib_mr *mr;
|
|
|
|
if (!pd->device->alloc_mr)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
mr = pd->device->alloc_mr(pd, mr_type, max_num_sg);
|
|
if (!IS_ERR(mr)) {
|
|
mr->device = pd->device;
|
|
mr->pd = pd;
|
|
mr->uobject = NULL;
|
|
atomic_inc(&pd->usecnt);
|
|
atomic_set(&mr->usecnt, 0);
|
|
}
|
|
|
|
return mr;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_mr);
|
|
|
|
struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
|
|
int max_page_list_len)
|
|
{
|
|
struct ib_fast_reg_page_list *page_list;
|
|
|
|
if (!device->alloc_fast_reg_page_list)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
|
|
|
|
if (!IS_ERR(page_list)) {
|
|
page_list->device = device;
|
|
page_list->max_page_list_len = max_page_list_len;
|
|
}
|
|
|
|
return page_list;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
|
|
|
|
void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
|
|
{
|
|
page_list->device->free_fast_reg_page_list(page_list);
|
|
}
|
|
EXPORT_SYMBOL(ib_free_fast_reg_page_list);
|
|
|
|
/* Memory windows */
|
|
|
|
struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
|
|
{
|
|
struct ib_mw *mw;
|
|
|
|
if (!pd->device->alloc_mw)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
mw = pd->device->alloc_mw(pd, type);
|
|
if (!IS_ERR(mw)) {
|
|
mw->device = pd->device;
|
|
mw->pd = pd;
|
|
mw->uobject = NULL;
|
|
mw->type = type;
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return mw;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_mw);
|
|
|
|
int ib_dealloc_mw(struct ib_mw *mw)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
pd = mw->pd;
|
|
ret = mw->device->dealloc_mw(mw);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_mw);
|
|
|
|
/* "Fast" memory regions */
|
|
|
|
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
|
|
int mr_access_flags,
|
|
struct ib_fmr_attr *fmr_attr)
|
|
{
|
|
struct ib_fmr *fmr;
|
|
|
|
if (!pd->device->alloc_fmr)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
|
|
if (!IS_ERR(fmr)) {
|
|
fmr->device = pd->device;
|
|
fmr->pd = pd;
|
|
atomic_inc(&pd->usecnt);
|
|
}
|
|
|
|
return fmr;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_fmr);
|
|
|
|
int ib_unmap_fmr(struct list_head *fmr_list)
|
|
{
|
|
struct ib_fmr *fmr;
|
|
|
|
if (list_empty(fmr_list))
|
|
return 0;
|
|
|
|
fmr = list_entry(fmr_list->next, struct ib_fmr, list);
|
|
return fmr->device->unmap_fmr(fmr_list);
|
|
}
|
|
EXPORT_SYMBOL(ib_unmap_fmr);
|
|
|
|
int ib_dealloc_fmr(struct ib_fmr *fmr)
|
|
{
|
|
struct ib_pd *pd;
|
|
int ret;
|
|
|
|
pd = fmr->pd;
|
|
ret = fmr->device->dealloc_fmr(fmr);
|
|
if (!ret)
|
|
atomic_dec(&pd->usecnt);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_fmr);
|
|
|
|
/* Multicast groups */
|
|
|
|
int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
|
|
{
|
|
int ret;
|
|
|
|
if (!qp->device->attach_mcast)
|
|
return -ENOSYS;
|
|
if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
|
|
return -EINVAL;
|
|
|
|
ret = qp->device->attach_mcast(qp, gid, lid);
|
|
if (!ret)
|
|
atomic_inc(&qp->usecnt);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_attach_mcast);
|
|
|
|
int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
|
|
{
|
|
int ret;
|
|
|
|
if (!qp->device->detach_mcast)
|
|
return -ENOSYS;
|
|
if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
|
|
return -EINVAL;
|
|
|
|
ret = qp->device->detach_mcast(qp, gid, lid);
|
|
if (!ret)
|
|
atomic_dec(&qp->usecnt);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(ib_detach_mcast);
|
|
|
|
struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
|
|
{
|
|
struct ib_xrcd *xrcd;
|
|
|
|
if (!device->alloc_xrcd)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
xrcd = device->alloc_xrcd(device, NULL, NULL);
|
|
if (!IS_ERR(xrcd)) {
|
|
xrcd->device = device;
|
|
xrcd->inode = NULL;
|
|
atomic_set(&xrcd->usecnt, 0);
|
|
mutex_init(&xrcd->tgt_qp_mutex);
|
|
INIT_LIST_HEAD(&xrcd->tgt_qp_list);
|
|
}
|
|
|
|
return xrcd;
|
|
}
|
|
EXPORT_SYMBOL(ib_alloc_xrcd);
|
|
|
|
int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
|
|
{
|
|
struct ib_qp *qp;
|
|
int ret;
|
|
|
|
if (atomic_read(&xrcd->usecnt))
|
|
return -EBUSY;
|
|
|
|
while (!list_empty(&xrcd->tgt_qp_list)) {
|
|
qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
|
|
ret = ib_destroy_qp(qp);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return xrcd->device->dealloc_xrcd(xrcd);
|
|
}
|
|
EXPORT_SYMBOL(ib_dealloc_xrcd);
|
|
|
|
struct ib_flow *ib_create_flow(struct ib_qp *qp,
|
|
struct ib_flow_attr *flow_attr,
|
|
int domain)
|
|
{
|
|
struct ib_flow *flow_id;
|
|
if (!qp->device->create_flow)
|
|
return ERR_PTR(-ENOSYS);
|
|
|
|
flow_id = qp->device->create_flow(qp, flow_attr, domain);
|
|
if (!IS_ERR(flow_id))
|
|
atomic_inc(&qp->usecnt);
|
|
return flow_id;
|
|
}
|
|
EXPORT_SYMBOL(ib_create_flow);
|
|
|
|
int ib_destroy_flow(struct ib_flow *flow_id)
|
|
{
|
|
int err;
|
|
struct ib_qp *qp = flow_id->qp;
|
|
|
|
err = qp->device->destroy_flow(flow_id);
|
|
if (!err)
|
|
atomic_dec(&qp->usecnt);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(ib_destroy_flow);
|
|
|
|
int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
|
|
struct ib_mr_status *mr_status)
|
|
{
|
|
return mr->device->check_mr_status ?
|
|
mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
|
|
}
|
|
EXPORT_SYMBOL(ib_check_mr_status);
|